GASCO Exit Exam • Set 4 Question 20 of 30
What is provided in a low duty gas compressor to prevent lubricating oil mist from entering the compressed LNG vapour ?
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Direct Answer
Option D: The seal gas system
A nitrogen seal gas system is fitted on LNG boil-off gas compressors to prevent lubricating oil mist from contaminating the compressed vapor and prevent gas leakage along shaft seals.
All Options
A
The gas detection system
B
The gas burning system
C
c. The lubricating system
D
The seal gas system
(Correct Answer)
Detailed Explanation & Context
A nitrogen seal gas system is fitted on LNG boil-off gas compressors to prevent lubricating oil mist from contaminating the compressed vapor and prevent gas leakage along shaft seals.
Relevant Framework: STCW 2010 Manila Amendments • DG Shipping E-Learning & Exit Exam Standards • Advanced Training for Liquefied Gas Tanker Cargo Operations (GASCO).
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